Something is pathological if it is changed by, caused by, or related to a disease. This term is related to the word “pathology”, which is the study of the cause and effects of disease.


    Pathology is the study of disease, and a pathological condition suggests that the condition is caused by or altered by a disease. For example, an individual with obsessive-compulsive disorder might have a pathological compulsion to repeat acts of cleanliness, and a person with diabetes might have pathological complications associated with their condition, like developing wounds on their feet.